EGK 2A Ex
7 Maintenance
During maintenance, remember:
– The equipment must be maintained by a professional familiar with the safety requirements and risks.
– Only perform maintenance work described in these operating and installation instructions.
– When performing maintenance of any type, observe the respective safety and operation regulations.
– Defective parts must be replaced immediately, and the unit, or the gas circuit, switched off.
DANGER
Electrical voltage
Electrocution hazard.
a) Disconnect the device from power supply.
b) Make sure that the equipment cannot be reconnected to mains unintentionally.
c) The device must be opened by trained staff only.
d) Regard correct mains voltage.
DANGER
Toxic, acidic gasses
Sample gas can be harmful.
a) Switch off the gas supply before performing maintenance and, if necessary, flush the
gas lines with air.
b) If necessary, ensure a safe gas discharge.
c) Protect yourself from toxic / acidic gasses when performing maintenance. Wear ap-
propriate protective equipment.
CAUTION
Gas emanation
The heat exchangers mustn't be pressurised when being removed.
CAUTION
Tilting risk
Damage of the device
Secure the device against any sudden translocation during maintenance.
CAUTION
Hot surface
Risk of burns
Depending on the operating parameters, the air heat exchanger at the back of the cooler
can reach a temperature of up to 80 °C during operation.
Allow the unit to cool down before performing maintenance.
NOTICE
- Wait at least one minute before opening the terminal box.
- Always shut off the gas supply before disconnecting the gas connection or condensate
drain components.
- Immediately replace defective parts, and switch off the cooler or the sampling path.
- The functionality of the safety circuits must be tested annually. If the test outcome is
negative, the unit must be sent to the manufacturer.
- Always transport the cooler upright.
- Always observe the requirements of the examination certificate (see attached).
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Bühler Technologies GmbH
BE450020 ◦ 01/2020
